■描述居住在中国南方的间歇性外斜视(IXT)手术患者的屈光特征。
■对2014年6月至2020年8月期间接受斜视手术患者的病历进行回顾性分析。临床数据,包括年龄,性别,屈光不正,术前偏离角度,外斜视的类型,调节收敛与调节比(AC/A比)和立体视觉,被调查了。
■共纳入2250名患者,93.6%的患者年龄小于30岁。在远处和近处,平均外偏角度为37.0±14.7棱镜度(PD)和37.5±15.8PD,分别。优势眼和非优势眼的平均球面等效屈光度(SER)值分别为-0.7±2.4D和-0.8±2.5D,分别。在6岁或以下的儿童中,优势眼和非优势眼之间的SER存在显着差异。近视的百分比从儿童(≤6岁)的11.0%增加到青少年(13-18岁)的77.9%。观察到外偏的幅度和近视的幅度之间的显著正相关(p<0.0001)。会聚功能不全的IXT型(p<0.0001)或AC/A<2型(p<0.05)患者表现出更大的近视程度。轻度远视组包括较大比例的受试者显示出一定程度的立体视觉(p<0.05)。
■我们一半以上的患者(51.2%)存在近视,远高于中国南方普通人口的百分比。衔接不充分的患者,例如,AC/A比率<2,或者较大的偏离角度倾向于具有较大的近视幅度。
To describe the refractive profile of surgical patients with intermittent exotropia (IXT) residing in southern China.
Medical records of patients who received strabismus surgery between June 2014 and August 2020 were retrospectively reviewed. Clinical data, including age, sex, refractive errors, preoperative angle of deviation, types of exotropia, accommodative convergence to accommodation ratio (AC/A ratio) and stereopsis, were investigated.
A total of 2250 patients were included, and 93.6% of patients were younger than 30 years of age. The mean angle of exodeviation was 37.0 ± 14.7 prism degree (PD) and 37.5 ± 15.8 PD at distance and near, respectively. Mean spherical equivalent refraction (SER) values were -0.7 ± 2.4 D and -0.8 ± 2.5 D in the dominant eye and nondominant eye, respectively. Significant differences in SER were observed between the dominant eye and nondominant eye among children at 6 years old or younger. The percentage of myopia increased from 11.0% in children (≤6 years old) to 77.9% in teenagers (13-18 years of age). Significant positive associations between the magnitude of exodeviation and the magnitude of myopia were observed (p < 0.0001). Patients with convergence insufficiency type IXT (p < 0.0001) or AC/A < 2 (p < 0.05) showed a greater magnitude of myopia. The mild hyperopia group included a larger proportion of subjects showing a certain degree of stereopsis (p < 0.05).
Myopia was present in more than half of our patients (51.2%), which is much higher than the percentage in the general population of southern China. Patients with convergence insufficiency, an AC/A ratio < 2, or a larger angle of deviation tended to have a greater magnitude of myopia.